... Chances are we began walking upright to heighten our efficiency. There was some climatic bottleneck event that killed off the inefficient. Knuckle-walking requires about four times the energy than walking upright. The hominids whose foramen magnum moved inferiorly needed to walk upright ...

... I splash my face with water- rinsing the hydrogen off. It also has a strange effect on my hands now. They begin to sting and turn white up to the knuckle area at the base of the fingers. This whiteness is uniform across the hand. is has never happened before when I would use hydrogen peroxide. ...

... I splash my face with water- rinsing the hydrogen off. It also has a strange effect on my hands now. They begin to sting and turn white up to the knuckle area at the base of the fingers. This whiteness is uniform across the hand. Th is has never happened before when I would use hydrogen peroxide. ...

... you feel you do not have a full range of motion in your finger joints or they are swollen and painful, it may be something more than the result of knuckle cracking for more than 20 years, such as osteoarthritis or other types of arthritis that involve the finger joints. taken from: http://www.health.uab.edu/show.asp?durki=61723&site=734&return=18687 ...